Variable | Response option | n (%) total | n (%) with SSC | n (%) without SSC |
---|---|---|---|---|
Patient characteristics | ||||
Sex | Female | 6292 (99.3) | 5062 (99.4) | 1230 (98.6) |
Male | 47 (0.7) | 30 (0.6) | 17 (1.4) | |
Age | Younger than 35 years | 87 (1.4) | 74 (1.5) | 13 (1.0) |
35–44 years | 403 (6.4) | 332 (6.5) | 71 (5.7) | |
45–54 years | 1330 (21.0) | 1102 (21.6) | 228 (18.3) | |
55–64 years | 1477 (23.3) | 1201 (23.6) | 276 (22.1) | |
65–74 years | 1434 (22.6) | 1183 (23.2) | 251 (20.1) | |
75–84 years | 1292 (20.4) | 1006 (19.8) | 286 (22.9) | |
Older than 84 years | 316 (5.0) | 194 (3.8) | 122 (9.8) | |
Prior cancer diagnosis | Yes | 170 (2.7) | 118 (2.3) | 52 (4.2) |
No | 6169 (97.3) | 4974 (97.7) | 1195 (95.8) | |
T-staging | TIS/DCIS | 581 (9.2) | 411 (8.1) | 170 (13.6) |
Invasive breast cancer | 5736 (90.5) | 4668 (91.7) | 1068 (85.7) | |
TX | 22 (0.4) | 13 (0.3) | 9 (0.7) | |
N-staging | N0 | 3841 (60.6) | 3140 (61.7) | 701 (56.2) |
> N0 | 2071 (32.7) | 1650 (32.4) | 421 (33.8) | |
NX | 427 (6.7) | 302 (5.9) | 125 (10.0) | |
M-staging | M0 | 5950 (93.9) | 4854 (95.3) | 1096 (87.9) |
M1 | 389 (6.1) | 238 (4.7) | 151 (12.1) | |
Both breasts affected (metachronous and synchronous) | No | 6046 (95.4) | 4857 (95.4) | 1190 (95.4) |
Yes | 292 (4.6) | 235 (4.6) | 57 (4.6) | |
Therapy type | Surgery with recommendation for chemotherapy | 2145 (33.8) | 1853 (36.4) | 292 (23.4) |
Surgery without recommendation for chemotherapy | 3779 (59.6) | 3097 (60.8) | 682 (54.7) | |
No surgery | 415 (6.6) | 142 (2.8) | 273 (21.9) | |
Date of diagnosis | 2015 | 2105 (33.2) | 1686 (33.1) | 419 (33.6) |
2016 | 2153 (34.0) | 1611 (31.6) | 542 (43.5) | |
2017 | 2081 (32.8) | 1795 (35.2) | 286 (22.9) | |
Center characteristics | ||||
Municipality | < 20,000 population | 411 (6.5) | 347 (6.8) | 64 (5.1) |
20,000–100,000 population | 4153 (65.5) | 3208 (63.0) | 945 (75.8) | |
> 100,000 population | 1775 (28.0) | 1537 (30.2) | 238 (19.1) | |
Teaching status | None | 567 (8.9) | 365 (7.2) | 202 (16.2) |
Academic | 5003 (78.9) | 4083 (80.2) | 920 (73.8) | |
University | 769 (12.1) | 644 (12.7) | 125 (10.0) | |
Ownership | Not-for-profit | 6063 (95.6) | 4859 (95.4) | 1204 (96.6) |
Private | 276 (4.4) | 233 (4.6) | 43 (3.4) | |
Number of primary cases | Continuous | 6339 (100) Center Mean (SD): 142.5 (9.7) | ||
Years since first certfiication | Continuous | 6339 (100) Center Mean (SD): 11.1 (5.9) |